Car-door lock.



C. W. UNDERWOOD.

CAR DOOR LOCK.

APPLICATION men AUG.I6, 1915.

1,171,989. 1 Patented Feb. 15,1916.

2 SHEETS-SHEET I.

UN DERWOOD Gummy C. W. UNDERWOOD.

CAR DOOR LOCK.

APPLICATION FILED AUG.16, m5.

1,171,989. Patented Feb. 15,1916.

2 SHEETS-SHEET 2.

awuantob C- W UNoERwooD UNITED s raras are CHARLES W. uivnnnwoon, orCROWLEY, ouisiana.

CAR-DOOR LOCK.

Specification of Letters Patent. 7

Application filed August 16, 1915 Serial No. ;77L

My invention relates to doors,' and particu-" larly to the doors ofcars, and the primary object of my invention is the provision of a meansfor forcing a car door inward toward the side wall of the car andholding it in a locked position; thus preventingleakage of water ortheinlet of snow into the car through the joint between the car ,door

and the car.

A further object of my invention is to provide a car door which is heldat four or more points of contact when in a locked position, thuspreventing the warping or springing of the door under any and allconditions, thus insuring at all times a perfectly operating door whichwill last as long as any other 'part of the car. 1

A further object of my invention is to provide means whereby a constantstrain or tension is applied to the door when it is closed and sealed,making the door absolutely weather-proof at alltimes and preventing anytendency of the car door to spring outward or warp.

a A further object of my invention is to provide a locking mechanismwhich 1 is mounted on the door itself andwhich is so constructed that itis possible to operate and lock the car door even if the car door is vhanging out of plumb. with the door opening.

A further object of myinvention is to provide construction whereinclamphooks ar "mounted upon the door adapted to engage with anchoring-boltsor like devices on the door irame and with resilient-cross bars uponwhich the clamp hooks are mounted,

so constructed that the tension or resilience of the cross bars willconstantly apply pres sure to the car door thus taking up any wear thatmay take place and insuring a watertight joint;

Other objects will appear in the course of the following description Myinvention is illustrated in theaccom- 'panving drawings, wherein:

Figure 1 is a fragmentary elevation of a portion of a railway car withmy improved door locking device applied thereto, the door being brokenaway; Fig. 2 is a longitudinal sectional View on the line 22 of Fig.1,showing thedoor in its locked position; Fig. 3 is a like View to Fig. 2,showing the door inits unlocked position; Fig. 4 is a frag- .mentary'perspective view of'one edge of the door and a portion of the adjacentframe; Flg. 5 1s a detail sectional view of thelock- .ing lever 26 andthe means for locking the 7 PatenteclFeb.15',1916.

lever in position Fig. 6 is a face view of a portion of adoorcfr'imeshowing a different form of anchoring device; Fig. 7 isasection' on theline Z-7 of FigrG-aFig. 8' is an enlarged face view ofthe sector 30. i

In Figs. 1 to 5, 2 designates-apart of any suitable construction, shownas' having a door opening 3 defined by the upper and lower sills '-l and5 and by the vertical st'u'diding 6. The car door 7 is of any suitableconstruction and as illustrated is mounted in the usual way'to slide toan open or closed position; To thisend the car door 7 at its upper end.is provided with a hanger 8 which "carries rollers 9 engaging with therail 10. This is no'part of my invention and I do not wish to be limitedto any par-.

ticular means thereto for mounting the door for sliding. movement. 7 Thecar door is shown as'prevented from outward move ment at its lower endby the hooks 11.

In the form of construction shown in Figs. 1 to 5, anchoring boltslflpass through the studding 6 and extend laterally therefrom parallelto the plane of the door and the side wall of the'car. These anchorbolts may be of any suitable form. The door 7 is provided with aplurality of transversely extending rotatable cross bars 13 which havethe form of shafts, each cross bar being 7 formed at its middle with acranked portion v 1% whose details of construction will be later descrbed, The extremlt es of eachv cross "bar 13 extend beyond the side edgesof'the door and are there provided with the clampiughooks 15 which arerigidly attached to the cross bars 13. The ends of each cross bar 13 aresupported in guide brackets each comprising a base 16 and an ellipticalor oval hearing 17. The longitudinal axis of this ellipse extends upwardand outward in divergent relation to the face of the door as illustratedin Fig. The width of the ellipse is practically the same as the diameterof the shaft or cross 13. The upper end of each elliptical guide isformed. with an outwardly or laterally projecting arcuate lug 18formii'ig a stop and disposed in the plane of the hook 15. hook 15 isformed with an inwardly projecting. pointed lug 19. It is to beunderstood that the hooks 15 are adapted to engage the anchoring bolts12 when the door is in its closed position, and for the purpose the bar20 there is provided a pin or bolt whose outer-end 1S supported by astrap and this pin or bolt 23 engages in a slot 25 formed in theextremity of an arm 26 of an angular lever designated generally-27. Thislever is pivoted at 28 upon the face of the car door and has adownwardly depending arm 29 forming a handle whereby the lever may bemoved. This arm 29 passes beneath a sector 30 which is attached to thecar door and spaced therefrom, and the arm is guided properly upon thissector by means of the outwardly projecting eye or perforated lug 31.The lower extremity of the arm, 29 is formed with a handle 32 whereby.the lever may be readily rhanipulated. The sector is provided with alongitudinally extending rib 33 terminating short of the end of thesector. The inside face of the sector is PIOVlClBCl with an arcuate lip3% also terminating short of the ends of the sector to provide twosockets 35 and 36. Disposed upon the face of the sector opposite thesocket 36 is a locking pin seat 37. Slidingly mounted. upon the arm 29is a collar carrying upon it and formed with it the locking pin 39 andhaving the hook-shaped head 10. This pin 39 is longitudinally slotted asat 41. When the handle 29 is shifted in one direction, that is, over 7toward the seat 36, the door will be locked The base of each the door isunlocked and the locking devices may beheld intheir unlocked13031131011.

by shiftingthe collar38into the seat 35.

The pin 39 of course passes through the per: forated lug or eye 31 and apadlockor other. suitable device is adapted to be engaged with the slot'41 and lock this pin. from accidental removal:

The operationof my locking device 1s1as follows: Assuming that the dooris in. ts

1,'the bar 20 will be raised.

cross bars 13,thus throwing the-hooks into engagement with the,anchoring bolts; A

further upward imovement of the bar 20 actsto lift the bars or shafts 13and as they are lifted the. ends of the bars orshafts' ride outward inthe elliptical-bearingl? thus straining the bars-13. The resilienceof'80 closed position, but the bar 20 isshifted;

downward to its lowest. position and the hooks 15 are retractechthenupon a move" ment of the handle 29 to the rightin F i This raising ofthe bar first acts to, rotate the shafts or these bars or shafts 13 issuch that the bars or shafts will give after the hooks have i beenbrought to theirfully locked position, and when the pin 39 is inengagement with the pin seat 37 these bars13 will be drawn upward at themiddle and placed under ten sion, thus resiliently drawing thedooragainst the face of the door frame. lVhen it is de- .sired to unlock thedoor the handle 29: is shifted reversely or toward the left in Fig.

1, which causesthe bar 20 to shift down! ward. This first acts torelieve the strain onthe bars 13 by carrying the bars downward in theelliptical; bearing 17 and then:

as illustrated in Fig. 3. The door maybe then readily shifted away fromthe door opening in the. usual manner.

hen thehooks are fully rei .tracted they will engage with stop lugs 18While I do'not wish to be limited to any particular way of constructingthe shafts:

or cross bars 13, I have illustrated. the; cranks as being formed bycastings havlng' socketed ends within. which the extremities of thesections forming the cross bars 13 are inserted and to which they .areattached in any suitable manner as by key pins or V the like.

While in Fig. 1, I show a car construe tion which requires that thelocking bolts other forms of car construction where these anchoringbolts in theform illustrated in Fig. 1 cannot be applied. Thus in Fig. 6

work. of the car entirely. Under'these circumstances 1 form the stud orupright 43 behind the sheathing witha seat 44 and also form a seat inthe's'heathing42. Int-his seat I dispose the anchor plate l5 whichanchor plate has ahead formed with a depression or recess as and with acrossbar 47. The head of this anchoring device is formed integral withthe bolt shank &8 which extends into and through the studding 43 and isengaged by a nut, this nut being preferably countersunk in the studding. Otherwise than this the construction is precisely the same aspreviously described. The hooks 15 instead ofengaging with anchoringbolts, as at IQ engage with the cross bars 47. It will thus be seen thatthe cross bars 47 and the studs or bolts 12 are'the equivalents of eachother and perform the same function.

gaged with the face of the door frame and will at all times place astrain upon thev door which will hold it closed and prevent the inlet ofrain,snow or dust. It will be seen that the door is braced by aplurality of transversely extending cross bars and that thus the door isforcedinward at a plurality of points. It will also be seen that whenstrain is placed upon these cross bars 13 the middle of the door isforced inward as well as the side margins of. the door. Thus the door isheld from warping. 'Furthermore, the strain placed upon the door isdistributed not only by the cross bars but by the bar 20. lVhile I haveillustrated two cross bars it will of course be understood that morecross bars might be used if desired. The resilient cross bars take upany wear that may take place in years of use and prevent the door fromwarping or from springing, and by my mechanism it i possible to lock thedoor even though the door is hanging out of plumb with the door openingin the car by reason of the fact that the cross bars have a certainamount of play in the vertically disposed slots of the bearing members.1

My invention very greatly increases the life of the door relative to thecar. At present the life of a car door is relatively short. The shiftingof the load, the use of pinch bars, and the nailing of cleats causes thedoor to shut and open with difficulty and the result is that the door isconstantly subjected to very'rough handling. With my construction thereis no necessity of cleats, no necessity of using pinch bars for. thepurpose of opening the door, and the pressurelof the goods againsttheinsid'e of the door is resisted by the resilient shafts or cross bars'13. r v v Having thus described iny'inventiomwhat I claim is;

l.--The combination with a door -frame' andf-a door, of members mountedon the door and adapted to have operative engage! ment with the doorframe and belng mounted for vertical movementrelative to the door, andmeans for flexing said members and thereby placing them under tensionupon a vertical movement.

The comblnation wlth' a door frame and. a door, of a plurallty oftransversely extending rotatable bars rotatably mounted upon the face ofthe door and projecting beyond it, hooks mounted on each end of sandbars and adapted to operatrvely engage the door frame, upwardly'andoutwardly inclined walls with which the'e'nds of the bars engage, andmeans for simultaneously as I rotating said bars and shifting themverti- H cally upward 1nto wedglng engagement wlth said walls. a

3. The combln'ation with awall having a door opening, of a sliding doormounted thereonicfor movement into position within said opening, aplurality of transversely eX- tendlng bars .rotatably mounted upon theface of the door and projecting thereb'eyond,'each of said bars beingformed with a cranked portion at its middle, radially. disposed hooksmounted upon the ends of each bar, members mountedupon the wall withwhich the hooks are adapted to engagewhen the door is in place, bracketsmounted adjacent the side margins of'the door and 7 each having anoutwardly extending web formed with an elongated upwardly and outwardlyextending slot through which the corresponding end of the bar passes, aivertically movable membermounted upon the face of the door for shdmgmovement and having operative engagement wlth the cranked portions ofsaid bars, and means for shifting said member upward to thereby rotatethe bars and shifting them vertically to thereby cause the walls of saidslotsto force the outer ends of the bars outward away from the face ofthe. door. 7

I 4. The combination with a wall having a door opening, of a doormounted for movement into position within said opening, a

transversely extending bar rotatably mount- .ed upon the doorandprojecting therebeyond, hooks carried by the bar, members carried bythe wall with which the, hooks are adapted to engage when the door is inplace. brackets mounted ad acent the side margins of the door and havingan elon gated upwardly and outwardly extending slot through which thecorresponding ends of the bar passes, and a movable member mounted-uponthe (1001 and having operat Ih testimony whereof I hereunto a'ffix' mytl e engagement Withthe shaft and adapted. signature in the presence oftwo Witnesses.

to rotate the bar and shift the same verti- Cally to thereby cause theWalls of the slot to force the outer ends of the bars outward away fremthe face ofthe door.

Copies of this patent may be obtained for five cents each, by addressingthe Gommissionerof rateptsg CHARLES VJ. UNDERWVOOD. Witnesses:

L.'L. CLARK,

JAs. ANNY..

Washington, 111G.

